Ventilator.



J. JACOBS.

VENTILATOR.

APPLIOATIOR FILED FEB. s, 1909.

Patented July 6, 1909.

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JACOB JACOBS, OF AKRON, OHIO.

VENTILATOR.

Specification of Letters Patent.

Application filed February 3, 1909.

Patented July 6, 1909.

Serial No. 475,867.

To all whom it may concern:

Be it known that I, JACOB Jncons, a subject of the German Emperor, and a resident of Akron, in the county of Summit and State of Ohio, have invented a new and Improved Ventilator, of which the following is full, clear, and exact description.

This invention relates to ventilators of the type employed in ventilating shafts or fines of warehouses, factories and other buildings.

The object of the invention is to provide a very simple and efiicient form of ventilator for roofs, adapted to be opened and closed and at all times protect the opening from rain and snow, and when closed, make a very tight connect-ion.

The invention consists in the construction and combination of parts, to be more fully described hereinafter and particularly set forth in the claims.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in both views, and in which Figure l is a vertical section taken on the line 11 in Fig. 2; and Fig. 2 is a top plan View of the ventilator complete.

In its present embodiment, a flue or pipe 1 may be mounted upon a roof or other support in any suitable manner, said pipe being formed at its upper end with a depending inclined annular flange 2. This flange may form a seat for a valve 4, which comprises a frustoconical shell adapted to rest upon the seat 2 when in its lowermost position. Said frusto-conical shell 4 also performs the function of a shedding member to prevent rain or snow from being driven into the airshaft 1. By forming the shell 4 without a central opening, it may be utilized for the ventilator top.

Secured to the outside of the shell 4 is a cylindrical shell 6, having a flaring annular portion 8 at its bottom end which 1s riveted to the shell 4. The upper edge of the shell 6 is formed with an angular annular flange 10, the horizontal portion of which forms a seat for a glass late 12, which covers the entire upper portion of the shell 6, forming a top for the ventilator. Said glass may be formed with embedded wire, if desired, in

a order that it may not become shattered if the ventilator should drop. In order to retain the glass late 12 upon its seat, an annular flange 14 1s fitted about the outer periphery of the flange 10, and is formed on its lower edge with a plurality of notches or serrations 15. The projections thus formed on the lower edge may be bent inwardly to lie against the under side of the seat which supports the glass plate 12, thus firmly binding the glass in position. The horizontal portion 16 of the annular member 14 overlies the upper surface of the glass plate 12.

Secured to the under side of the frustoconical shedding member 4 are a plurality of braces 18, which in the present instance are four in number and substantially trapezoidal in shape. A frusto-conical shedding member 20 is located below the member 4 and provided with an upper cylindrical portion 21 which is attached to the vertical arms 22 of the braces 18. Said cylindrical portion 21 is separated from the exterior of the airshaft 1, as clearly shown in Fig. 1. A second frusto-conical shedding member 24 surrounds the air-shaft 1 below the member 20, and is secured to the inclined portion 25 of the braces 18. The diameter of the upper portion of the shedding member 25 is slightly larger than the exterior diameter of the airshaft 1, thus allowing free movement of the former over the latter, but is adapted to engage the flange 2 at the upper end of the airshaft 1, thereby limiting the upper move ment of the ventilator. Secured to the inner face of the shedding member 24 are a plurality of arms 27, which are adapted to come in contact with the upper ends of spiral springs 28 supported upon brackets 29 which are fastened to the outside of the air-shaft 1. These springs absorb the impact of the ventilator if it should be suddenly dropped, thus preventing the glass top from becoming shattered.

Surrounding the shedding members 4, 20 and 24, but separated therefrom, is an annular wind-shield 30 secured to the vertical portions 31 of the braces 18. This windshield aids in preventing rain or snow from being forced between the shedding members, and any rain or snow forced between said shedding members will pass down the outside of the air-shaft 1. A plurality of ropes or cables 32 are attached to the shedding member 24, and pass between the exterior of the shaft 1 and the interior of the cylindrical portion 21 of the shedding member 20, and thence over pulleys 34 suitably journaled and supported from the shaft 1. Said cables are then united at 36 and a single rope or cord 37 passes downwardly and may be secured to any desired fastening means. If desired, a fusible link may be connected to the cord 37, so that, in case of fire, the ventilator may be automatically closed to prevent access of air to the interior of the structure. In this case, the springs 28 will absorb the impact caused by the fall of the ventilator. It will be understood that resilient means other than those shown may bereadily substituted without departing from the spirit of the invention.

From the construction above set forth, it will be noted that the ventilator may be supported to admit of any degree of opening between the top and the upper edge of the air-shaft, thus allowing the temperature of the room or building to which it is applied to be regulated, and the admission of rain or snow is effectually prevented.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In a ventilator, the combination of an air-shaft, a movable structure comprising a valve having a flat top, a plurality of braces, a plurality of shedding members secured to said braces, a wind-shield surrounding said shedding members and secured to said braces, and resilient means for supporting the movable structure.

2. In a ventilator, the combination of an air-shaft, a movable structure comprising a glass top, a plurality of frusto-conical shedding members, a plurality of braces secured to said shedding members, a wind-shield surrounding said shedding members and secured to said braces, a plurality of springs mounted on the outside of said air-shaft, and means for raising and lowering said ventilator.

3. In a ventilator, the combination of an open-ended pipe having an inclined depending annular flange at its upper edge, a frustoconical valve adapted to lie on said flange when in its lowermost position, a top secured to said valve, a plurality of braces secured to said valve, a plurality of shedding members secured to said braces, a wind-shield surrounding said shedding members and secured to said braces, a plurality of pulleys mounted on said pipe, means passing over said pulleys and operatively connected to raise and lower said valve and connecting members, and resilient means mounted on said pipe to receive the impact of the movable structure.

4. In a ventilator, the combination with an air shaft, of a movable structure comprising a valve, a plurality of braces connected with the valve, a shedding member secured to said braces, a wind-shield encircling the shedding member and secured to the braces, and resilient means for engagement by the structure when it is in lowermost position.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JACOB JACOBS. lVitnesses:

VALTER HERBINOH, CHARLES HERBINCH. 

